Home / 189,721.52-261,831.24-104,840

Finding the Fourth Proportional to 189,721.52, 261,831.24 and 104,840

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Solution

The fourth proportional to 189,721.52, 261,831.24 and 104,840 is: 144,687.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,721.52 : 261,831.24 = 104,840 : x
  2. Step 2: Convert to fraction form
    189,721.52/261,831.24 = 104,840/x
  3. Step 3: Cross multiply
    189,721.52x = 261,831.24 × 104,840
  4. Step 4: Simplify right side
    189,721.52x = 27,450,387,201.60
  5. Step 5: Solve for x
    x = 27,450,387,201.60/189,721.52
  6. Step 6: Final answer
    x = 144,687.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.